<template>
<div class="app-container">
  <!--查询表单-->
  <div class="search-div">
    <el-form label-width="70px" size="small">
      <el-row>
        <el-col :span="24">
          <el-form-item label="角色名称">
            <el-input style="width: 100%" v-model="searchObj.roleName" placeholder="角色名称"></el-input>
          </el-form-item>
        </el-col>
      </el-row>
      <el-row style="display:flex">
        <!-- 工具条 -->
        <div class="tools-div">
          <el-button type="primary" icon="el-icon-search" size="mini" :loading="loading" @click="fetchData()">搜索</el-button>
          <el-button type="success" icon="el-icon-plus" size="mini" @click="add">添 加</el-button>
          <el-button type="danger" class="btn-add" size="mini" @click="batchRemove()" >批量删除</el-button>
          <el-button icon="el-icon-refresh" size="mini" @click="resetData">重置</el-button>
        </div>
      </el-row>
    </el-form>
  </div>
  <!-- 用户列表  -->
  <div class="app-container">
    <!-- 表格 -->
    <el-table
      v-loading="listLoading"
      :data="list"
      stripe
      border
      style="width: 100%;margin-top: 10px;"
      @selection-change="handleSelectionChange">

      <el-table-column type="selection"/>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="roleName" label="角色名称" />
      <el-table-column prop="roleCode" label="角色编码" />
      <el-table-column prop="createTime" label="创建时间" width="160"/>
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <el-button type="primary" icon="el-icon-edit" size="mini" @click="edit(scope.row.id)" title="修改"/>
          <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeDataById(scope.row.id)" title="删除"/>
        </template>
      </el-table-column>
    </el-table>
  </div>
  <!-- 分页组件 -->
  <el-pagination
    :current-page="page"
    :total="total"
    :page-size="limit"
    :background="true"
    style="padding: 30px 0; text-align: center;"
    layout="total, prev, pager, next, jumper"
    @current-change="fetchData"
  />

  <el-dialog title="添加/修改" :visible.sync="dialogVisible" width="40%" >
    <el-form ref="dataForm" :model="sysRole" label-width="150px" size="small" style="padding-right: 40px;">
      <el-form-item label="角色名称">
        <el-input prefix-icon="el-icon-user" v-model="sysRole.roleName"/>
      </el-form-item>
      <el-form-item label="角色编码">
        <el-input prefix-icon="el-icon-postcard" v-model="sysRole.roleCode"/>
      </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false" size="small" icon="el-icon-refresh-right">取 消</el-button>
        <el-button type="primary" icon="el-icon-check" @click="saveOrUpdate()" size="small">确 定</el-button>
      </span>
  </el-dialog>

</div>
</template>

<script>
/* 导入 api */
import api from '@/api/system/sysRole'

export default {

  /* 数据类型 */
  data() {
    return {
      /* PageInfo */
      list: [],
      total: 0,
      page: 1,
      limit: 5,
      searchObj: {},
      /* 批量删除数据列表 */
      multipleSelectionList:[],
      dialogVisible: false,
      sysRole: {},
      saveBtnDisabled: false
    }
  },
  created() {
    /* 生命周期函数，页面数据渲染前加载分页数据 */
    this.fetchData()
  },
  /* 方法 */
  methods: {
    /* 加载用户列表 */
    fetchData(current=1) {
      this.page = current
      /* 调用 Api */
      api.getPageList(this.page, this.limit, this.searchObj).then(response => {
        this.list = response.data.records
        this.total = response.data.total
      })
    },
    /* 重置表单 */
    resetData() {
      this.searchObj = {}
      this.fetchData()
    },
    /* 根据 ID 删除数据 */
    removeDataById(id) {
      this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => { // promise
        /* 点击确定，远程调用 Ajax */
        return api.removeById(id)
      }).then((response) => {
        this.fetchData(this.page)
        this.$message.success(response.message || '删除成功')
      })
    },
    add(){
      this.dialogVisible = true
    },

    saveOrUpdate() {
      this.saveBtnDisabled = true /* 防止表单重复提交 */
      if (!this.sysRole.id) {
        this.saveData()
      } else {
        this.updateData()
      }
    },
    /* 当页码发生改变的时候 */
    changeSize(size) {
      this.limit = size
      this.fetchData(1)
    },

    /* 新增 */
    saveData() {
      api.save(this.sysRole).then(response => {
        this.$message.success(response.message || '操作成功')
        this.dialogVisible = false
        this.fetchData(this.page)
      })
    },
    edit(id) {
      this.dialogVisible = true
      this.fetchDataById(id)
    },

    fetchDataById(id) {
      api.getById(id).then(response => {
        this.sysRole = response.data
      })
    },
    updateData() {
      api.updateById(this.sysRole).then(response => {
        this.$message.success(response.message || '操作成功')
        this.dialogVisible = false
        this.fetchData(this.page)
      })
    },
    /* 当多选选项发生变化的时候调用 */
    handleSelectionChange(selection) {
      console.log(selection)
      this.multipleSelection = selection
    },
    /* 批量删除 */
    batchRemove() {
      if (this.multipleSelection.length === 0) {
        this.$message.warning('请选择要删除的记录！')
        return
      }
      this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        /* 点击确定，远程调用 Ajax 遍历selection，将id取出放入id列表*/
        var idList = []
        this.multipleSelection.forEach(item => {
          idList.push(item.id)
        })
        /* 调用 Api */
        return api.batchRemove(idList)
      }).then((response) => {
        this.fetchData()
        this.$message.success(response.message)
      })
    }
  }
}
</script>

<style lang="less" scoped>

</style>
